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BUFFALO EMERGENCY ASSOCIATES LLP
NPI 1508816521
Emergency Medicine in Williamsville, NY

Active since May 11, 2006
6653 MAIN ST, WILLIAMSVILLE, NY 14221(719) 204-4500(716) 204-4501 Get Directions Write a Review

NPPES record last updated: June 13, 2023. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Buffalo Emergency Associates Llp NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

BUFFALO EMERGENCY ASSOCIATES LLP (NPI 1508816521) is a healthcare organization registered as an emergency medicine in Williamsville, New York and active in the NPI registry since May 2006. The organization lists David Joseph Istvan, Owner, as its authorized official.

NPPES Registry Identity

NPI1508816521
Entity TypeOrganization
Primary Taxonomy207P00000X
Legal Business NameBUFFALO EMERGENCY ASSOCIATES LLP
Location Address6653 MAIN STWilliamsville, NY 14221-5906
Mailing Address307 S Evergreen AveWoodbury, NJ 08096-2739 · (716) 204-4500 · Fax (716) 204-4501
Phone(719) 204-4500
Fax(716) 204-4501
Organization SubpartNo
Authorized OfficialDavid Joseph IstvanOwner · (856) 686-4394
Enumeration DateMay 11, 2006
Last NPPES UpdateJune 13, 2023
NPPES CertifiedJune 13, 2023
✔ NPI 1508816521 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207P00000X
Definition
An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.
6653 MAIN ST, Williamsville, NY 14221
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Other Identifiers 1

Medicaid02066131NY

Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Buffalo Emergency Associates Llp is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

194

Medicare enrollment records show 194 clinicians reassign Medicare billing to Buffalo Emergency Associates LLP, which bills Medicare for the services they deliver. Of these, 6 practice at this address and 55 within 10 miles. Listed here are the 20 practicing nearest to this location.

Clinicians by Medicare Specialty 4

Emergency Medicine147
Nurse Practitioner32
Internal Medicine8
Family Practice7

Nearest to this location (20)

See all 194
Syed Bukhari, MD
Emergency Medicine
NPI 1447203633
6653 MAIN ST
Williamsville, NY 14221
(716) 204-4500
✔ PECOSSame address
Richard Elman, MD
Emergency Medicine
NPI 1851345698
6653 MAIN ST
Williamsville, NY 14221
(716) 204-4500
✔ PECOS✔ Accepts MedicareSame address
Douglas Hickox, MD
Emergency Medicine
NPI 1396799698
6653 MAIN ST
Williamsville, NY 14221
(716) 204-4500
✔ PECOSSame address
Lloyd Brown, MD
Emergency Medicine
NPI 1043261779
6653 MAIN ST
Williamsville, NY 14221
(716) 204-4500
✔ PECOS✔ Accepts MedicareSame address
Kathryn Gutillo, DO
Emergency Medicine
NPI 1184841306
6653 MAIN ST
Williamsville, NY 14221
(716) 204-4500
✔ PECOS✔ Accepts MedicareSame address
Marc Klementowski, M.D.
Emergency Medicine
NPI 1134196728
6653 MAIN ST
Williamsville, NY 14221
(716) 204-4500
✔ PECOSSame address
Michael Baggett, MD
Emergency Medicine
NPI 1437102712
6245 SHERIDAN DR SUITE 212
Williamsville, NY 14221
(716) 204-4500
✔ PECOS0.7 mi
Edward Cosgrove, MD
Internal Medicine
NPI 1639123433
6245 SHERIDAN DR SUITE 212
Williamsville, NY 14221
(716) 204-4500
✔ PECOS0.7 mi
Jay Newman, MD
Emergency Medicine
NPI 1073567954
6245 SHERIDAN DR SUITE 212
Williamsville, NY 14221
(716) 688-2154
✔ PECOS0.8 mi
Jose Perez-Brache, MD
Emergency Medicine
NPI 1033162144
6245 SHERIDAN DR SUITE 212
Williamsville, NY 14221
(716) 204-4500
✔ PECOS0.9 mi
Anthony Buscaglia, D.O.
Emergency Medicine
NPI 1598828733
5430 MAIN ST
Williamsville, NY 14221
(716) 204-0707
✔ PECOS✔ Accepts Medicare2.3 mi
Michael Ferguson, MD
Emergency Medicine
NPI 1790728673
1540 MAPLE RD EMERGENCY ROOM
Williamsville, NY 14221
(716) 691-8838
✔ PECOS✔ Accepts Medicare2.3 mi
Thomas Krier, MD
Emergency Medicine
NPI 1447602172
1540 MAPLE RD
Buffalo, NY 14221
(716) 568-3600
✔ PECOS2.3 mi
Courtenay Watt, MD
Emergency Medicine
NPI 1841233442
1540 MAPLE RD EMERGENCY ROOM
Williamsville, NY 14221
(716) 681-8838
✔ PECOS✔ Accepts Medicare2.3 mi
Michael Wisiorek, D.O.
Family Practice
NPI 1427001262
777 MAPLE ROAD SUITE 4 & 5
Williamsville, NY 14221
(716) 500-4247
✔ PECOS3.3 mi
Geoffrey Schweikhard
Emergency Medicine
NPI 1285992321
3980 SHERIDAN DR
Amhurst, NY 14226
(716) 691-8838
✔ PECOS✔ Accepts Medicare4.3 mi
Brian Walters, D.O.
Emergency Medicine
NPI 1396949194
3980 SHERIDAN DR
Amherst, NY 14226
(716) 691-8838
✔ PECOS✔ Accepts Medicare4.3 mi
Vinod Garg, MD
Internal Medicine
NPI 1437184173
148 AUTUMN CREEK CT
East Amherst, NY 14051
(716) 903-3130
✔ PECOS✔ Accepts Medicare4.6 mi
Nathaniel Billings, M.D.
Emergency Medicine
NPI 1396991923
1 JOHN JAMES AUDUBON PKWY
Amherst, NY 14228
(716) 204-4500
✔ PECOS4.9 mi
Jessica Ede, M.D.
Emergency Medicine
NPI 1619382744
2605 HARLEM RD
Cheektowaga, NY 14225
(716) 891-2400
✔ PECOS✔ Accepts Medicare5.2 mi
See all 194 clinicians

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Buffalo Emergency Associates LLP's NPI number?

The NPI number for Buffalo Emergency Associates LLP is 1508816521. It was assigned to this organization in the NPPES registry on May 11, 2006.

Where is Buffalo Emergency Associates LLP located?

Buffalo Emergency Associates LLP is located at 6653 Main St, Williamsville, NY 14221. The listed phone number is (719) 204-4500.

What is Buffalo Emergency Associates LLP's specialty?

The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.

Is Buffalo Emergency Associates LLP enrolled in Medicare?

Yes. Buffalo Emergency Associates LLP is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Buffalo Emergency Associates LLP?

According to the CMS Revalidation Reassignment List (October 2026 release), 194 clinicians in 4 Medicare specialties reassign their Medicare billing to Buffalo Emergency Associates LLP. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. The largest specialties are Emergency Medicine (147), Nurse Practitioner (32) and Internal Medicine (8). Of these, 6 practice at this address and 55 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Buffalo Emergency Associates LLP was last updated on June 13, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.